.grid_1,.grid_2,.grid_3,.grid_4,.grid_5,.grid_6,.grid_7,
.grid_8,.grid_9,.grid_10,.grid_11,.grid_12{margin-left: .8%;margin-right: .8%;}

.left_menu{margin-left: 0;}
.right_menu{margin-left: 0;margin-right: 0;}